I just replaced the switch mod on my dash. My truck the other day was spinning in the lot when I was testing it out. There’s no 4WD it feels like nor does anything lock. Any ideas or suggestions? Can I get away with just replacing the shift motor possibly?

 

HUH?
Don't understand what a "switch mod on my dash" is? Why did you replace it anyway?
HUMMERs (H1, H2, H3) are full time 4wd.
"nor does anything lock", HUH?

Let's try Model, Model year, engine, trans, mileage, etc. then explain what the issue was that had you replacing the "switch mod on my dash".

 

AKA............ we got no idea what you are asking about .......please describe the vehicle that your questions are referring to. Once you do that, I can move your thread to the correct section of HF.